1. The acid used in the titration is a weak diprotic acid. Briefly explain: 1. how you know it’s diprotic from looking at the titration curve and 2. how you know a weak acid.

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1. The acid used in the titration is a weak diprotic acid. Briefly explain: 1. how you know it’s diprotic from looking at the titration curve and 2. how you know a weak acid.

2. If we used H2C4H4O5 as the weak diprotic acid, which of the four species, H2C4H4O5, HC4H4O51- , C4H4O52- or OH1- , will be present in the highest concentrations in a solution at the given pH’s below? If you think any of the above are equal, write the two species that are equal as an equivalence (i.e. H2C4H4O5 = HC4H4O51- ).

Titration curve for 0.100 L of a weak acid by 1.00 M NaOH
log[H,A]
12
10
-1
pH 8
-2
-3
4
-4
2
-5
0.000
0.005
0.010
0.015
0.020
0.025
0.030
Volume of NaOH added, (L)
Transcribed Image Text:Titration curve for 0.100 L of a weak acid by 1.00 M NaOH log[H,A] 12 10 -1 pH 8 -2 -3 4 -4 2 -5 0.000 0.005 0.010 0.015 0.020 0.025 0.030 Volume of NaOH added, (L)
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